// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/*library: nnbd=true*/

abstract class A {
  T foo<T>();
  String bar() => /*invoke: String?*/ foo/*<String?>*/()!;
}

main() {}
